English words starting with R

A set of nuclear reactions in astrophysics that is responsible for the creation of approximately half of the atomic nuclei heavier than iron, characterized by rapid neutron capture.

(of a film) having a restriction that prohibits children under a certain age (usually 17) from viewing unless accompanied by an adult, due to the presence of strong language, violence, or adult themes.

A continuous groove, slot, or step cut along the edge or face of a piece of wood or other material, designed to receive the edge or tongue of another piece to form a joint.

A Jewish scholar or teacher, especially one who studies or teaches Jewish law.

The position, office, or period of office of a rabbi.

Relating to rabbis, their writings, or their teachings.

Relating to rabbis, their writings, or their teachings.

A small furry animal with long ears and a short tail, that lives in a hole in the ground

A large, noisy, disorganized, and often aggressive crowd of people.

A person who makes a group of people angry or excited, especially so that they might behave violently.

Intended to stir up common people to anger or action, especially for political purposes.

(Of an animal, especially a dog) affected with rabies; mad.

In an extremely violent, intense, or fanatical manner.

a serious disease of the nervous system that can affect any warm-blooded animal and is usually transmitted by the bite of an infected animal

A small North American mammal with grayish-brown fur, a black mask-like marking around its eyes, and a ringed tail.

A competition between people, animals, or vehicles to see which is the fastest.

The making of verbal attacks against members of a racial group, especially in order to provoke anger or fear.

Determined by or dependent on a person's race or ethnicity.

Not considering or influenced by a person's race or ethnicity; characterized by a deliberate disregard of racial factors.

A car designed and built for high-speed racing, especially on a track.

Aware of or attentive to racial differences and issues, often implying that this awareness influences attitudes or actions.

the day on which a race, especially a major horse race, is held

Not favoring or discriminating against any particular racial group; designed or intended to avoid racial bias.

Fully prepared or equipped to compete in a race, especially a vehicle or athlete.

Connected with or involving race or racial issues.

Relating to or affecting only a particular race or ethnic group.

a vehicle designed for high-speed racing, typically a single-seater with an open cockpit.

A track or ground where horse or dog races are held.

a horse bred and trained for racing.

a person, animal, or vehicle that competes in races

A track or course on which races are held, especially for horses, cars, or dogs.

A track or channel designed for racing, especially for cars, bicycles, or horses.

Relating to or based on race, or on the idea that people can be divided into different races.

relating to race or ethnicity; involving or based on the idea of race or ethnic group.

The belief that people can be divided into distinct races, and that some races are inherently superior to others; racism.

A person who believes in the theory of racism; a racist.

The process of making or becoming racial in character, or of imposing a racial interpretation or structure on social relations or identity.

Categorized, perceived, or treated according to socially constructed racial groups.

in a way that relates to race or to different races of people

The sport or pastime of competing in races.

The unfair treatment of people or violence against them because they belong to a different race

A person who believes that some races of people are better than others, or who acts unfairly to someone because of their race.

A framework, typically with rails, bars, hooks, or pegs, for holding or storing things.

A mechanism for converting rotary motion into linear motion, consisting of a bar with teeth (the rack) that mesh with a small gear (the pinion).

A piece of sports equipment consisting of a handle and an oval frame with strings stretched across it, used for hitting the ball in games such as tennis or badminton.

A person who makes money through illegal activities, especially by using threats or violence to force people to pay for protection they do not need.

The activity of getting money through dishonest or illegal activities, often involving threats or violence, typically organized by a group.

A Swiss dish of melted cheese, typically scraped onto a plate of boiled potatoes, pickled onions, and gherkins as it melts.

a person who is skilled at telling stories or anecdotes in an interesting and amusing way.

A greyish-brown North American mammal with a black mask-like marking across its eyes and a long, ringed tail.

A piece of sports equipment consisting of a round or oval frame with strings stretched across it, used for hitting the ball in games such as tennis or badminton.

A game played with a short-handled racket and a hollow rubber ball on a four-walled court.

Lively, entertaining, and slightly shocking or sexually suggestive.

Very good; excellent, fashionable, or exciting.

A system for detecting the presence, direction, distance, and speed of objects, such as aircraft or ships, by sending out pulses of radio waves which are reflected back off the object.

Directed or controlled by a radar system.

Arranged or having parts arranged in lines coming out from a central point

The speed at which an object moves toward or away from an observer, measured along the line of sight.

In a way that spreads out from a central point.

a unit for measuring angles, equal to the angle at the centre of a circle whose arc is the same length as the circle's radius.

light or heat as emitted or reflected by something.

sending out light; shining or glowing brightly.

in a way that shines brightly or emits light.

to send out rays of light or heat

Having parts arranged in a radiating pattern; spreading out from a central point.

Sending out light, heat, or energy in the form of rays or waves.

The process of sending out energy in the form of waves or particles.

Relating to or involving the emission of energy as electromagnetic waves or as moving subatomic particles.

A device for heating a room, consisting of a metal container connected by pipes through which hot water is pumped.

Relating to or affecting the fundamental nature of something; far-reaching or thorough.

The beliefs or actions of people who advocate thorough or complete political or social reform.

The action or process of making someone or something more radical, especially in politics or religion.

To make someone or something more radical, especially in political or social outlook.

(of a person or group) characterized by the adoption of extreme political, social, or religious views and policies.

In a thorough or fundamental way; completely.

A type of chicory with dark red leaves and a slightly bitter taste, eaten raw in salads.

A piece of electronic equipment used for listening to broadcasts sent through the air.

Fitted with a radio transmitter, typically for the purpose of tracking an animal's movements.

Operated or guided from a distance by using radio signals.

A combined term for the broadcasting industries of radio and television, or for equipment capable of receiving both radio and television signals.

An electromagnetic wave with a wavelength between about one millimeter and one hundred kilometers, used for long-distance communication.

(of a substance) emitting energy or particles as a result of the disintegration of atomic nuclei.

In a manner that involves or is characterized by radioactivity.

The property possessed by some elements (such as uranium) or isotopes of spontaneously emitting energetic particles or radiation by the disintegration of their atomic nuclei.

A radioactive isotope of carbon, especially carbon-14, used in dating ancient organic materials.

An image produced on a sensitive surface by radiation other than visible light, especially by X-rays passing through an object.

Relating to or produced by radiography; of or pertaining to the process of making images using X-rays or other forms of radiation.

In a manner relating to or using radiography; by means of a radiograph.

The process or occupation of taking radiographs (X-ray photographs) of internal parts of the body for medical examination.

a radioactive isotope of an element.

Relating to radiology, the science of using radiation or radioactive substances in medicine, especially for diagnosis and treatment.

A doctor who specializes in using medical imaging techniques, such as X-rays, CT scans, and MRIs, to diagnose and treat diseases.

The science dealing with X-rays and other high-energy radiation, especially the use of such radiation for the diagnosis and treatment of disease.

A person who operates or is skilled in the use of radio equipment, especially on a ship, aircraft, or military unit.

An instrument for measuring the intensity or force of radiation.

Relating to the measurement of radioactivity or radiation.

a radioactive nuclide; an atom with an unstable nucleus that undergoes radioactive decay.

the treatment of disease, especially cancer, using radiation such as x-rays.

A small, crisp, red or white vegetable with a strong, slightly spicy taste, eaten raw in salads.

a rare, highly radioactive metallic chemical element.

a straight line from the center to the circumference of a circle or sphere.

a chemical element that is a radioactive gas, used in some medical treatments

a soft fiber from the leaves of a type of palm tree, used for making baskets, hats, and mats.

(of a person or their appearance) slightly disreputable, especially in a cheerful or attractive way.

a lottery in which people buy tickets to win prizes.

A flat floating structure, often made of pieces of wood tied together, used for travelling across water.

One of the sloping beams that form the framework of a roof.

the activity or sport of travelling down a river on a raft.

A piece of old, often torn, cloth, typically used for cleaning.

Describing a group of people or things that are disorganized, untidy, or made up of a diverse and often low-quality mixture.

A pattern of notes in Indian classical music used as a basis for improvisation and composition.

A person, especially a child, in ragged, dirty clothes.

A confused mixture of different things

strong, uncontrollable anger

(of clothes or fabric) old and torn

in a rough, uneven, or irregular manner.

(of a person or thing) wearing torn, dirty, and untidy clothes, or in a poor condition

Resembling or consisting of rags; tattered and torn.

Showing or expressing very strong anger

a highly seasoned stew of meat and vegetables.